A string is compressed by 2 mm by a force of 8 N and condenser is charged through a potential difference of 200 V possess a charge of 80 microcoulomb the ratio of energy stored in the two bodies is

Options

A. 1
B. `3//2`
C. 2
D. `1//2`

Answer

A

Explanation

`l=2mm,F=8N,V=200V,Q=80muC,E_(1)/E_(c)=?`
`E_(1)/E_(c)=((F*l)/2)/(1/2QV)=(Fl)/(QV)`
`E_(1)/E_(c)=(8xx2xx10^(-3))/(80xx10^(-6)xx200)=1/1`